IEC 61156-12:20 21描述了用于办公室、家庭和工业应用中通过单双绞线传输1 Gbit/s的电缆。现有应用的示例是1000BASE-T1；参见ISO/IEC TR 11801-9906。这些电缆的传输特性规定为高达600 MHz的频率和20°C的温度。认可的电缆类型旨在用于标称长度为40 m的屏蔽通道的工作区域布线。可能的设计是U/FTP、X/UTP和X/FTP，其中X代表F、S或SF。 本文件涵盖的电缆旨在在通信系统中通常遇到的电压和电流下工作。虽然这些电缆不打算与低阻抗源(例如公共事业干线的电力供应)结合使用，但它们打算用于支持低压远程供电应用的输送。

IEC 61156-12:2021 describes cables intended to be used for transmission of 1 Gbit/s over a single twisted pair for office, home and industrial application. An example of an existing application is 1000BASE-T1; see ISO/IEC TR 11801-9906. The transmission characteristics of these cables are specified up to a frequency of 600 MHz and at a temperature of 20 °C. The cable type recognised is intended to be used for the work area wiring of shielded channels with a nominal length of 40 m. Possible designs are U/FTP, X/UTP and X/FTP, where X stands for F, S or SF.
The cables covered by this document are intended to operate with voltages and currents normally encountered in communication systems. While these cables are not intended to be used in conjunction with low impedance sources, e.g. the electric power supplies of public utility mains, they are intended to be used to support the delivery of low voltage remote powering applications.